Newly Crowned Online-Gambling King Takes On U.S. With Two Brands

The world’s biggest online-gambling company will approach the rapidly growing U.S. sports-betting market with two major brands: FanDuel and Fox Bet.

Both are coming under the umbrella of Flutter Entertainment Plc, which announced on Tuesday morning that it is buying Stars Group Inc. in a $6 billion deal. The tie-up creates one megacompany that will lead the industry. Flutter’s brands include Paddy Power, Betfair and FanDuel; Stars Group’s include PokerStars, BetStars, SkyBet and Fox Bet.

The combined company will set its sights on the U.S. sports-betting marketplace, which is quickly expanding as more states choose to legalize wagering ...